LM137KMDA [TI]
IC VREG 1.2 V-37 V ADJUSTABLE NEGATIVE REGULATOR, UUC, METAL CAN, TO-3, 2 PIN, Adjustable Negative Single Output Standard Regulator;
| 型号： | LM137KMDA |
| 厂家： | 
TEXAS INSTRUMENTS |
| 描述： | IC VREG 1.2 V-37 V ADJUSTABLE NEGATIVE REGULATOR, UUC, METAL CAN, TO-3, 2 PIN, Adjustable Negative Single Output Standard Regulator |
| 文件： | 总20页 (文件大小：563K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
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information and details on our current products and services.
November 2001
LM137/LM337
3-Terminal Adjustable Negative Regulators
n Excellent thermal regulation, 0.002%/W
n 77 dB ripple rejection
General Description
The LM137/LM337 are adjustable 3-terminal negative volt-
age regulators capable of supplying in excess of −1.5A over
an output voltage range of −1.2V to −37V. These regulators
are exceptionally easy to apply, requiring only 2 external
resistors to set the output voltage and 1 output capacitor for
frequency compensation. The circuit design has been opti-
mized for excellent regulation and low thermal transients.
Further, the LM137 series features internal current limiting,
thermal shutdown and safe-area compensation, making
them virtually blowout-proof against overloads.
n Excellent rejection of thermal transients
n 50 ppm/˚C temperature coefficient
n Temperature-independent current limit
n Internal thermal overload protection
n P+ Product Enhancement tested
n Standard 3-lead transistor package
n Output is short circuit protected
LM137 Series Packages and Power Capability
The LM137/LM337 serve a wide variety of applications in-
cluding local on-card regulation, programmable-output volt-
age regulation or precision current regulation. The LM137/
LM337 are ideal complements to the LM117/LM317
adjustable positive regulators.
Rated
Power
Dissipation
20W
Design
Device
Package
Load
Current
1.5A
LM137/337 TO-3 (K)
TO-39 (H)
2W
0.5A
Features
n Output voltage adjustable from −1.2V to −37V
n 1.5A output current guaranteed, −55˚C to +150˚C
n Line regulation typically 0.01%/V
n Load regulation typically 0.3%
LM337
LM337
TO-220 (T)
SOT-223
(MP)
15W
1.5A
2W
1A
Typical Applications
Comparison between SOT-223 and
D-Pak (TO-252) Packages
Adjustable Negative Voltage Regulator
00906731
Scale 1:1
00906701
Full output current not available at high input-output voltages
†
C1 = 1 µF solid tantalum or 10 µF aluminum electrolytic required for
stability
*C2 = 1 µF solid tantalum is required only if regulator is more than 4" from
power-supply filter capacitor
Output capacitors in the range of 1 µF to 1000 µF of aluminum or tantalum
electrolytic are commonly used to provide improved output impedance and
rejection of transients
© 2001 National Semiconductor Corporation
DS009067
www.national.com
Absolute Maximum Ratings (Notes 1,
4)
LM337
0˚C to +125˚C
−40˚C to +125˚C
−65˚C to +150˚C
300˚C
LM337I
Storage Temperature
Lead Temperature (Soldering, 10 sec.)
Plastic Package (Soldering, 4 sec.)
ESD Rating
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
260˚C
Power Dissipation
Input-Output Voltage Differential
Operating Junction Temperature
Range
Internally Limited
40V
2k Volts
LM137
−55˚C to +150˚C
Electrical Characteristics (Note 1)
Parameter
Conditions
LM137
Typ
LM337
Units
Min
Max
Min
Typ
Max
Line Regulation
Tj = 25˚C, 3V ≤ |VIN − VOUT| ≤ 40V
(Note 2) IL = 10 mA
0.01
0.02
0.01
0.04
%/V
Load Regulation
Tj = 25˚C, 10 mA ≤ IOUT ≤ IMAX
Tj = 25˚C, 10 ms Pulse
0.3
0.002
65
0.5
0.02
100
5
0.3
0.003
65
1.0
0.04
100
5
%
%/W
µA
Thermal Regulation
Adjustment Pin Current
Adjustment Pin Current Charge
10 mA ≤ IL ≤ IMAX
2
2
µA
3.0V ≤ |VIN − VOUT| ≤ 40V,
TA = 25˚C
Reference Voltage
Tj = 25˚C (Note 3)
−1.225 −1.250 −1.275 −1.213 −1.250 −1.287
−1.200 −1.250 −1.300 −1.200 −1.250 −1.300
V
V
3V ≤ |VIN − VOUT| ≤ 40V, (Note 3)
10 mA ≤ IOUT ≤ IMAX, P ≤ PMAX
3V ≤ |VIN − VOUT| ≤ 40V, (Note 2)
10 mA ≤ IOUT ≤ IMAX, (Note 2)
TMIN ≤ Tj ≤ TMAX
Line Regulation
0.02
0.3
0.6
2.5
1.2
0.05
1
0.02
0.3
0.6
2.5
1.5
0.07
1.5
%/V
%
Load Regulation
Temperature Stability
Minimum Load Current
%
|VIN − VOUT| ≤ 40V
5
3
10
6
mA
mA
|VIN − VOUT| ≤ 10V
Current Limit
|VIN − VOUT| ≤ 15V
K, MP and T Package
H Package
1.5
0.5
2.2
0.8
3.5
1.8
1.5
0.5
2.2
0.8
3.7
1.9
A
A
|VIN − VOUT| = 40V, Tj = 25˚C
K, MP and T Package
H Package
0.24
0.15
0.4
0.17
0.003
60
0.15
0.10
0.4
0.17
0.003
60
A
A
RMS Output Noise, % of VOUT
Ripple Rejection Ratio
Tj = 25˚C, 10 Hz ≤ f ≤ 10 kHz
VOUT = −10V, f = 120 Hz
CADJ = 10 µF
%
dB
66
77
66
77
dB
Long-Term Stability
Tj = 125˚C, 1000 Hours
0.3
1
15
3
0.3
12
1
15
3
%
Thermal Resistance, Junction to H Package
12
˚C/W
˚C/W
˚C/W
˚C/W
˚C/W
˚C/W
˚C/W
Case
K Package
T Package
2.3
2.3
4
Thermal Resistance, Junction to H Package
140
35
140
35
Ambient (No Heat Sink)
K Package
T Package
MP Package
50
170
Note 1: Unless otherwise specified, these specifications apply −55˚C ≤ T ≤ +150˚C for the LM137, 0˚C ≤ T ≤ +125˚C for the LM337; V − V
= 5V; and I
OUT
j
j
IN
OUT
= 0.1A for the TO-39 package and I
= 0.5A for the TO-3, SOT-223 and TO-220 packages. Although power dissipation is internally limited, these specifications
OUT
are applicable for power dissipations of 2W for the TO-39 and SOT-223 (see Application Hints), and 20W for the TO-3, and TO-220. I
SOT-223 and TO-220 packages, and 0.2A for the TO-39 package.
is 1.5A for the TO-3,
MAX
Note 2: Regulation is measured at constant junction temperature, using pulse testing with a low duty cycle. Changes in output voltage due to heating effects are
covered under the specification for thermal regulation. Load regulation is measured on the output pin at a point 1
" below the base of the TO-3 and TO-39 packages.
⁄
8
www.national.com
2
Electrical Characteristics (Note 1) (Continued)
Note 3: Selected devices with tightened tolerance reference voltage available.
Note 4: Refer to RETS137H drawing for LM137H or RETS137K drawing for LM137K military specifications.
Schematic Diagram
00906702
Thermal Regulation
When power is dissipated in an IC, a temperature gradient
occurs across the IC chip affecting the individual IC circuit
components. With an IC regulator, this gradient can be es-
pecially severe since power dissipation is large. Thermal
regulation is the effect of these temperature gradients on
output voltage (in percentage output change) per Watt of
power change in a specified time. Thermal regulation error is
independent of electrical regulation or temperature coeffi-
cient, and occurs within 5 ms to 50 ms after a change in
power dissipation. Thermal regulation depends on IC layout
as well as electrical design. The thermal regulation of a
voltage regulator is defined as the percentage change of
00906703
LM137, V
= −10V
OUT
V
OUT, per Watt, within the first 10 ms after a step of power is
V
− V
= −40V
applied. The LM137’s specification is 0.02%/W, max.
IN
OUT
→
→
0A
I
= 0A
0.25A
IL
Vertical sensitivity, 5 mV/div
FIGURE 1.
3
www.national.com
Thermal Regulation (Continued)
In Figure 1, a typical LM137’s output drifts only 3 mV (or
0.03% of VOUT = −10V) when a 10W pulse is applied for
10 ms. This performance is thus well inside the specification
limit of 0.02%/W x 10W = 0.2% max. When the 10W pulse is
ended, the thermal regulation again shows a 3 mV step at
the LM137 chip cools off. Note that the load regulation error
of about 8 mV (0.08%) is additional to the thermal regulation
error. In Figure 2, when the 10W pulse is applied for 100 ms,
the output drifts only slightly beyond the drift in the first
10 ms, and the thermal error stays well within 0.1% (10 mV).
00906704
LM137, V
= −10V
OUT
V
− V
= −40V
IN
OUT
→
→
0A
I
= 0A
0.25A
L
Horizontal sensitivity, 20 ms/div
FIGURE 2.
Connection Diagrams
TO-3
TO-220
Metal Can Package
Plastic Package
00906705
Bottom View
Order Number LM137K/883
LM137KPQML and LM137KPQMLV(Note 5)
See NS Package Number K02C
Order Number LM337K STEEL
See NS Package Number K02A
Case is Input
TO-39
Metal Can Package
00906707
Front View
Order Number LM337T
See NS Package Number T03B
3-Lead SOT-223
00906706
Bottom View
Order Number LM137H, LM137H/883 or LM337H
LM137HPQML and LM137HPQMLV(Note 5)
See NS Package Number H03A
00906734
Front View
Order Number LM337IMP
Case Is Input
Package Marked N02ASee NS Package Number MA04A
Note 5: See STD Mil DWG 5962P99517 for Radiation Tolerant Devices
www.national.com
4
Application Hints
Typical Applications
When a value for θ(H−A) is found using the equation shown,
a heatsink must be selected that has a value that is less than
or equal to this number.
Adjustable Lab Voltage Regulator
HEATSINKING SOT-223 PACKAGE PARTS
The SOT-223 (“MP”) packages use a copper plane on the
PCB and the PCB itself as a heatsink. To optimize the heat
sinking ability of the plane and PCB, solder the tab of the
package to the plane.
Figures 3, 4 show the information for the SOT-223 package.
Figure 4 assumes a θ(J−A) of 75˚C/W for 1 ounce copper and
51˚C/W for 2 ounce copper and a maximum junction tem-
perature of 125˚C.
00906709
Full output current not available
at high input-output voltages
*The 10 µF capacitors are optional to improve ripple rejection
Current Regulator
00906732
FIGURE 3. θ(J−A) vs Copper (2 ounce) Area for the
SOT-223 Package
00906711
Negative Regulator with Protection Diodes
00906733
FIGURE 4. Maximum Power Dissipation vs. TAMB for
the SOT-223 Package
Please see AN1028 for power enhancement techniques to
be used with the SOT-223 package.
00906713
*
When C is larger than 20 µF, D1 protects the LM137 in case the input
L
supply is shorted
**
When C2 is larger than 10 µF and −V
is larger than −25V, D2
OUT
protects the LM137 in case the output is shorted
5
www.national.com
Typical Applications (Continued)
High Stability −10V Regulator
*
−5.2V Regulator with Electronic Shutdown
00906714
00906710
*Minimum output . −1.3V when control input is low
Adjustable Current Regulator
00906712
www.national.com
6
Typical Performance Characteristics (K Steel and T Packages)
Load Regulation
Current Limit
00906716
00906717
Adjustment Current
Dropout Voltage
00906718
00906719
Temperature Stability
Minimum Operating Current
00906720
00906721
7
www.national.com
Typical Performance Characteristics (K Steel and T Packages) (Continued)
Ripple Rejection
Ripple Rejection
00906722
00906723
00906725
00906727
Ripple Rejection
Output Impedance
00906724
Line Transient Response
Load Transient Response
00906726
www.national.com
8
Physical Dimensions inches (millimeters)
unless otherwise noted
Metal Can Package (H)
Order Number LM137H, LM137H/883 or LM337H
NS Package Number H03A
9
www.national.com
Physical Dimensions inches (millimeters) unless otherwise noted (Continued)
Metal Can Package (K)
Order Number LM337K STEEL
NS Package Number K02A
Mil-Aero Metal Can Package (K)
Order Number LM137K/883
NS Package Number K02C
www.national.com
10
Physical Dimensions inches (millimeters) unless otherwise noted (Continued)
3-Lead SOT-223 Package
Order Number LM337IMP
NS Package Number M04A
11
www.national.com
Physical Dimensions inches (millimeters) unless otherwise noted (Continued)
TO-220 Plastic Package (T)
Order Number LM337T
NS Package Number T03B
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into the body, or (b) support or sustain life, and
whose failure to perform when properly used in
accordance with instructions for use provided in the
labeling, can be reasonably expected to result in a
significant injury to the user.
2. A critical component is any component of a life
support device or system whose failure to perform
can be reasonably expected to cause the failure of
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Products > Analog - Regulators > Linear Regulators - Standard/NPN > Negative Voltage - Adjustable >
LM337
LM337 Product Folder
3-Terminal Adjustable Negative Regulator
Generic P/N 337
General
Description
Package
& Models
Samples
& Pricing
Application
Notes
Features
Datasheet
Parametric Table
Multiple Output Capability
On/Off Pin
Parametric Table
No
No
-
Input Voltage, max (Volt)
Output Current, max
Watchdog
-4.20
1500 mA
-
Error Flag
Input Voltage, min (Volt)
-40
Output Voltage, min (Volt)
Output Voltage, max (Volt)
-37
-1.20
Datasheet
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Date
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01
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LM137 LM337 3-Terminal Adjustable Negative Regulators
LM137 LM337 3-Terminal Adjustable Negative Regulators
(JAPANESE)
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General Description
The LM137/LM337 are adjustable 3-terminal negative voltage regulators capable of supplying in excess of -
1.5A over an output voltage range of -1.2V to -37V. These regulators are exceptionally easy to apply,
requiring only 2 external resistors to set the output voltage and 1 output capacitor for frequency
compensation. The circuit design has been optimized for excellent regulation and low thermal transients.
Further, the LM137 series features internal current limiting, thermal shutdown and safe-area compensation,
making them virtually blowout-proof against overloads.
The LM137/LM337 serve a wide variety of applications including local on-card regulation, programmable-
output voltage regulation or precision current regulation. The LM137/LM337 are ideal complements to the
LM117/LM317 adjustable positive regulators.
Features
●
●
●
●
●
●
●
●
●
●
Output voltage adjustable from -1.2V to -37V
1.5A output current guaranteed, -55°C to +150°C
Line regulation typically 0.01%/V
Load regulation typically 0.3%
Excellent thermal regulation, 0.002%/W
77 dB ripple rejection
Excellent rejection of thermal transients
50 ppm/°C temperature coefficient
Temperature-independent current limit
Internal thermal overload protection
P+ Product Enhancement tested
●
●
●
Standard 3-lead transistor package
Output is short circuit protected
LM137 Series Packages and Power Capability
Rated
Power
Design
Load
Device
Package
Dissipation Current
20W 1.5A
LM137/337 TO-3 (K)
TO-39 (H)
2W
15W
2W
0.5A
1.5A
1A
LM337
LM337
TO-220 (T)
SOT-223 (MP)
Application Notes
Title
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LB-46: A New Production
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Regulators
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Products > Analog - Regulators > Linear Regulators - Standard/NPN > Negative Voltage - Adjustable > LM137
LM137 Product Folder
3-Terminal Adjustable Negative Regulator
Generic P/N 137
General
Description
Package
& Models
Samples
& Pricing
Application
Notes
Features
Datasheet
Parametric Table
Multiple Output Capability
On/Off Pin
Parametric Table
No
No
-
Input Voltage, max (Volt)
Output Current, max
Watchdog
-4.20
1500 mA
-
Error Flag
Input Voltage, min (Volt)
-40
Output Voltage, min (Volt)
Output Voltage, max (Volt)
-37
-1.20
Datasheet
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LM137 LM337 3-Terminal
Adjustable Negative Regulators
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10-Dec-01
LM137 Mil-Aero (DESC) Datasheet
MDLM137-H
LM137 Mil-Aero (DESC) Datasheet
MDLM137-K
LM137 Mil-Aero (JAN) Datasheet
MJLM137-H
LM137 Mil-Aero (JAN) Datasheet
MJLM137-K
LM137 Mil-Aero Datasheet
MNLM137-K
LM137 Mil-Aero Datasheet
MNLM137-WG
LM137 Mil-Aero Datasheet
MNLM137-X
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MRLM137-K-RH
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SOIC
16
50+ $199.0000 of
QMLV 5962
9951701VZA
42
tray
of
N/A
Samples
Samples
Samples
Die
LM137K MDA
LM137KG MDA
LM137H MD8
Full production
Full production
Full production
N/A
N/A
N/A
N/A
N/A
N/A
-
-
-
tray
of
N/A
Die
Die
tray
of
N/A
tray
of
N/A
Die
Die
LM137K MDS
LM137H MDS
Full production
Full production
N/A
N/A
N/A
N/A
-
-
tray
of
50+ $42.0000
100
wafer
jar
of
Wafer
Wafer
LM137KG MWA
Full production
Full production
N/A
N/A
N/A
N/A
-
-
N/A
wafer
jar
of
LM137H MW8
N/A
General Description
The LM137/LM337 are adjustable 3-terminal negative voltage regulators capable of supplying in excess of -
1.5A over an output voltage range of -1.2V to -37V. These regulators are exceptionally easy to apply,
requiring only 2 external resistors to set the output voltage and 1 output capacitor for frequency
compensation. The circuit design has been optimized for excellent regulation and low thermal transients.
Further, the LM137 series features internal current limiting, thermal shutdown and safe-area compensation,
making them virtually blowout-proof against overloads.
The LM137/LM337 serve a wide variety of applications including local on-card regulation, programmable-
output voltage regulation or precision current regulation. The LM137/LM337 are ideal complements to the
LM117/LM317 adjustable positive regulators.
Features
●
●
●
●
●
●
●
●
●
●
Output voltage adjustable from -1.2V to -37V
1.5A output current guaranteed, -55°C to +150°C
Line regulation typically 0.01%/V
Load regulation typically 0.3%
Excellent thermal regulation, 0.002%/W
77 dB ripple rejection
Excellent rejection of thermal transients
50 ppm/°C temperature coefficient
Temperature-independent current limit
Internal thermal overload protection
P+ Product Enhancement tested
●
●
●
Standard 3-lead transistor package
Output is short circuit protected
LM137 Series Packages and Power Capability
Rated
Power
Design
Load
Device
Package
Dissipation Current
LM137/337 TO-3 (K)
TO-39 (H)
20W
2W
1.5A
0.5A
1.5A
1A
LM337
LM337
TO-220 (T)
15W
2W
SOT-223 (MP)
Application Notes
Title
Size in Kbytes Date
Receive via Email
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View Online
LB-46: A New Production
Technique for Trimming Voltage
Regulators
View Online Download Receive via Email
View Online Download Receive via Email
91 Kbytes
76 Kbytes
28-Jun-96
AN-182: Inproving Power Supply
Reliability with IC Power
Regulators
4-Nov-95
If you have trouble printing or viewing PDF file(s), see Printing Problems.
[Information as of 5-Aug-2002]
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